As a photographer I know this, and just didn't want to get into the highlight/shadow adjustment detail, I just used the term HDR instead. The problem here is that the darker portions, which lack information (the common issue with camera CMOS sensors being that the darker the recorded "color", the less there is information) have been lightened, and as there is not much information in these portions of the image, it looks artificial. Also the CA on the wheel are pretty nasty to be observable at this image size. But all in all, this is an amazing MTB trick, I'm not contesting that, just saying the pp could have been a bit more subtle, plus a flash directed on the rider could have helped. But sick trick.